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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 26 — Dec. 21, 2009
  • pp: 23502–23510

Fast and slow light in optical fibers through tilted fiber Bragg gratings

Marco Pisco, Armando Ricciardi, Stefania Campopiano, Christophe Caucheteur, Patrice Mégret, Antonello Cutolo, and Andrea Cusano  »View Author Affiliations

Optics Express, Vol. 17, Issue 26, pp. 23502-23510 (2009)

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In this paper, slow and fast light in optical fiber through tilted fiber Bragg grating (TFBG) are reported. The experimental results show the capability of TFBGs to enable group velocity control of an optical pulse in optical fiber, due to the anomalous dispersion features induced by the coupling between the propagating core mode and each counter-propagating coupling cladding mode. In particular, superluminal propagation of a pulse train has been observed at optical communication wavelengths with time advancements in the picoseconds time scale in 1cm long TFBG and group velocity as large as about two times the speed of light in optical fiber (≈1.3∙c0). Very good agreement has been obtained comparing the measured group delay of the TFBG with the one retrieved from the amplitude response through Hilbert transform. Finally, tunable slow and fast light has also been reported, demonstrating the possibility to control the group velocity at single wavelength through both fluidic and thermal actuation.

© 2009 OSA

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(230.1150) Optical devices : All-optical devices
(320.7120) Ultrafast optics : Ultrafast phenomena
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Slow and Fast Light

Original Manuscript: August 21, 2009
Revised Manuscript: October 14, 2009
Manuscript Accepted: October 30, 2009
Published: December 8, 2009

Marco Pisco, Armando Ricciardi, Stefania Campopiano, Christophe Caucheteur, Patrice Mégret, Antonello Cutolo, and Andrea Cusano, "Fast and slow light in optical fibers through tilted fiber Bragg gratings," Opt. Express 17, 23502-23510 (2009)

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